Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Confidence interval for mean using normal distribution.

A market research company surveys individuals to determine how much money they spend each year on clothing.  They sample 30 individuals and the sample mean is $1287 with a sample standard deviation of 632.

Required:
1.estimation the population expenditure on clothing with 95% confidence.
2. Estimate the population expenditure on clothing with 99% confidence.
3. describe the difference between your results in 1 and 2.

If the population mean was $1047 in the previous year, does the evidence suggest that expenditure this year has significantly changed?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922220

Have any Question? 


Related Questions in Statistics and Probability

A spinoff of the anti-war and civil rights movements of the

A spinoff of the anti-war and civil rights movements of the 1960s that affected women was? increased desire to return to the security of homes and families decreased political involvement. the birth of the women's libera ...

Tell which measures are resistant to outliers and which are

Tell which measures are resistant to outliers and which are NOT resistant to outliers from the following list, and explain WHY or WHY NOT for each measure: Mean, median, Quartiles, correlation, and standard deviation.

A person goes to his office everyday he has a single

A person goes to his office everyday. He has a single umbrella. When he is home and the umbrella is home, he can choose to bring it. He will certainly do so if it is raining, but must decide what to do if is not raining, ...

What would the null and alternate hypothesis be for the

What would the null and alternate hypothesis be for, " The airlines claim that complaints average less than 15 per month per airport. To investigate the problem an independent watchdog agency contacted a random sample of ...

When how and why was israel created discuss the six day

When, how, and why was Israel created? Discuss the Six Day War and the Yom Kipper War from both the Israeli and Arab points of view. Who are the most important leaders and personalities in the Middle East today?How might ...

Relate the content of this video to the industry segment of

Relate the content of this video to the Industry segment of the external environment by describing which of Porter's Five Competitive Forces is the focus of Outsell Consulting's value proposition? What is the nature of t ...

The number of credits being taken by a sample of 13

The number of credits being taken by a sample of 13 full-time college students are listed below. Find the mean, median, and mode of the data, if possible. If any measure cannot be found or does not represent the center o ...

How did some indian religious leaders add certain christian

How did some Indian religious leaders add certain Christian teachings to their traditional beliefs?

Let x0 x1 x2nbspbe three vectors in rn prove that these

Let x 0 , x 1 , x 2  be three vectors in R n . Prove that these vectors are affine independent if and only if none of them is a convex combination of the other two.

Question discuss the specific innovations of jackson

Question: Discuss the specific innovations of Jackson Pollock, as well as his cultural influences and artists he influenced. Use at least two examples of specific artworks. This question relates to Chapter 28 and 29 in A ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen